Any idea. Found on a new piece of Tonga branch

[Glori73]

Found something I have never seen before on a new piece of Tonga branch. Any help identifying it would be greatly appreciated. Is it something we should keep or get rid of?

 

[JustinM]

That is a sponge, nothing to fret over.

 

[Ryan Darilek]

+1

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[ericarenee]

sponge.. but is that a brittle star leg behind it... ?

 

[JonCubb]

Ya, Sponge.